ESCRT IV complex / Sealing of the nuclear envelope (NE) by ESCRT-III / late endosome to lysosome transport via multivesicular body sorting pathway / intralumenal vesicle formation / protein retention in Golgi apparatus / Endosomal Sorting Complex Required For Transport (ESCRT) / late endosome to vacuole transport via multivesicular body sorting pathway / sterol metabolic process / nuclear membrane reassembly / vacuole organization ...ESCRT IV complex / Sealing of the nuclear envelope (NE) by ESCRT-III / late endosome to lysosome transport via multivesicular body sorting pathway / intralumenal vesicle formation / protein retention in Golgi apparatus / Endosomal Sorting Complex Required For Transport (ESCRT) / late endosome to vacuole transport via multivesicular body sorting pathway / sterol metabolic process / nuclear membrane reassembly / vacuole organization / multivesicular body sorting pathway / midbody abscission / plasma membrane repair / membrane fission / late endosome to vacuole transport / multivesicular body assembly / reticulophagy / endosomal transport / lipid transport / nucleus organization / ATPase complex / ATPase activator activity / autophagosome maturation / nuclear pore / multivesicular body / macroautophagy / autophagy / protein transport / midbody / protein-macromolecule adaptor activity / endosome / endoplasmic reticulum / protein homodimerization activity / ATP hydrolysis activity / ATP binding / identical protein binding / membrane / plasma membrane / cytoplasm 類似検索 - 分子機能
Vta1/Callose synthase, N-terminal domain superfamily / Vta1/callose synthase, N-terminal / Vta1, C-terminal / Vacuolar protein sorting-associated protein Vta1-like / Vta1 like / Vta1 C-terminal domain / Vacuolar protein sorting-associated protein 4, MIT domain / MIT (microtubule interacting and transport) domain / MIT domain superfamily / Vps4 oligomerisation, C-terminal ...Vta1/Callose synthase, N-terminal domain superfamily / Vta1/callose synthase, N-terminal / Vta1, C-terminal / Vacuolar protein sorting-associated protein Vta1-like / Vta1 like / Vta1 C-terminal domain / Vacuolar protein sorting-associated protein 4, MIT domain / MIT (microtubule interacting and transport) domain / MIT domain superfamily / Vps4 oligomerisation, C-terminal / MIT domain / Microtubule Interacting and Trafficking molecule domain / : / Vps4 C terminal oligomerisation domain / AAA ATPase, AAA+ lid domain / AAA+ lid domain / ATPase, AAA-type, conserved site / AAA-protein family signature. / ATPase family associated with various cellular activities (AAA) / ATPase, AAA-type, core / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性
Vacuolar protein sorting-associated protein 4 / Vacuolar protein sorting-associated protein VTA1 類似検索 - 構成要素
ジャーナル: Elife / 年: 2017 タイトル: Structural basis of protein translocation by the Vps4-Vta1 AAA ATPase. 著者: Nicole Monroe / Han Han / Peter S Shen / Wesley I Sundquist / Christopher P Hill / 要旨: Many important cellular membrane fission reactions are driven by ESCRT pathways, which culminate in disassembly of ESCRT-III polymers by the AAA ATPase Vps4. We report a 4.3 Å resolution cryo-EM ...Many important cellular membrane fission reactions are driven by ESCRT pathways, which culminate in disassembly of ESCRT-III polymers by the AAA ATPase Vps4. We report a 4.3 Å resolution cryo-EM structure of the active Vps4 hexamer with its cofactor Vta1, ADP·BeF, and an ESCRT-III substrate peptide. Four Vps4 subunits form a helix whose interfaces are consistent with ATP binding, is stabilized by Vta1, and binds the substrate peptide. The fifth subunit approximately continues this helix but appears to be dissociating. The final Vps4 subunit completes a notched-washer configuration as if transitioning between the ends of the helix. We propose that ATP binding propagates growth at one end of the helix while hydrolysis promotes disassembly at the other end, so that Vps4 'walks' along ESCRT-III until it encounters the ordered N-terminal domain to destabilize the ESCRT-III lattice. This model may be generally applicable to other protein-translocating AAA ATPases.